关键词: 再制造, 逆向工程, 逆向建模, 模型配准, 废旧零部件

Abstract: Aiming at the problems such as more artificial participation,high experience dependence,low repair efficiency and poor reliability in remanufacturing process of worn-out parts,an overall procedure of reverse engineering aided remanufacturing for worn-out parts repairing was proposed,and the key technologies of worn-out parts model's reconstruction and defect model's extraction were elaborated.Through separating the defective region from the non-defective region in the scanned point cloud,the passing region of feature outline was judged automatically and the precision of reverse modeling was ensured.A registration method based on modified Interactive Closest Point (ICP) algorithm was proposed,which could automatic eliminate the points in the defective region,and improve the registration accuracy of defective model and original model.The proposed methods were verified by actual repairing cases.

Key words: remanufacturing, reverse engineering, reverse modeling, model registration, worn-out parts